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Mailvett: Email Validation API for AI Agents

Validate email addresses (no SMTP probing)

validate_emails
Read-onlyIdempotent

Check up to 10 email addresses: syntax, whether the domain exists and has mail servers (MX), mail provider, disposable, role account (info@, sales@), free provider, likely typo with a suggested fix, domain age, SPF and DMARC. Returns verdict (deliverable_likely/risky/undeliverable/invalid), score 0-100 and reason codes per address. Does not verify that the mailbox itself exists.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
emailsYesEmail addresses, also "Name <email>" or mailto: links. Up to 10.

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed1 schema field changed
    • addedInput schema / properties / emails / examples
      Added value: +[
      +  [
      +    "support@stripe.com"
      +  ]
      +]
  2. First observed

TDQS

Score is being calculated.

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